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Properties of substance:

sodium phosphate dodecahydrate

Physical appearance:

colorless trigonal crystals

Empirical formula (Hill's system):


Structural formula:

Na3PO4 · 12H2O

Molar/atomic mass: 380.12

Melting point (°C):


Destruction point (°C):


Solubility (g/100 g of solvent):

water: 28.3 (20°C)
carbon disulphide: insoluble
ethanol: insoluble


1.64 (20°C, g/cm3)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -5480 (s)

    Standard molar entropy S0 (298.15 K, J/mol·K):

    660 (s)

    Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

    665 (s)


      1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 168-169
      2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 85
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        © Collected Ruslan Anatolievich Kiper,